SEARCH PHP and MYSQL - php

Question

I need mysql code or php to handle some search query
Lets say we have these 5 items in our store.
ID | TYPE | Pattern
1. | Kilner | scissor
2. | Kilner | forcep
3. | Boyd | scissor Small
4. | Boyd | scissor large
5. | Boyd | forcep
6. | Boyd | clamp
Could you help me mysql query to handle below operation
If we search 'boyd' then numbers 3 4 5 and 6 should come up.
If we search 'scissor' then numbers 1 3 and 4 should come up.
If we search 'boyd scissor', numbers 3 and 4 should come up.
If they search' Kilner scissor' then only no 1 should display.
Let me know
thanks

Answer 1

the way to do it in mysql is full text search
SELECT *, MATCH(field) AGAINST ('word1 word2 word3') AS score
FROM table
WHERE MATCH(field) AGAINST('word1 word2 word3')
look this tutorial http://devzone.zend.com/26/using-mysql-full-text-searching/

Answer 2

try this query
SELECT * FROM `table` WHERE `name` LIKE '%$search_var%'
PDO structure
$db = $this->pdo->prepare("SELECT * FROM `table` WHERE `name` LIKE :mysearch");
$db->execute( array("mysearch"=>'%'.$mysearch.'%') );

Answer 3

The query you ask is a bit complex. You want to return matches in both columns, but if both columns match, then single matches have to be discarded.
This means, one way or another, run a query requiring two matches and one requiring one match, comparing the results and returning the appropriate set.
Performance-wise, I believe it is better to run one query that will fetch both, and then handle the results in PHP (you could handle them in MySQL through the use of a superquery).
So:
// We split keywords
$keywords = array_unique(preg_split('/\s+/', $search));
$inset = array();
foreach($keywords as $keyword)
$inset[] = "'".mysql_real_escape_string($keyword)."'";
$sql_in = '('.implode(',', $inset).')';
$query = "SELECT *, IF(type IN $sql_in, 1,0)+IF(pattern IN $sql_in,1,0) AS matches FROM mytable WHERE (type IN $sql_in) OR (pattern IN $sql_in) ORDER BY matches DESC;";
The above uses the discouraged mysql_ functions. Using PDO, that would be:
$keywords = array_unique(preg_split('/\s+/', $search));
// Generate a (?,?,?..?) template as long as $keywords
$sql_in = '('.implode(',', array_fill(0, count($keywords), '?')).')';
$query = "SELECT *, IF(type IN $sql_in, 1,0)+IF(pattern IN $sql_in,1,0) AS matches FROM mytable WHERE (type IN $sql_in) OR (pattern IN $sql_in) ORDER BY matches DESC;";
$st = $db->prepare($query);
$st->execute($keywords);
Note that the above uses exact match, so "Boyd" will retrieve a match with "Boyd", but "Boy" won't. Use the % matching character to change this behaviour.
Now we retrieve a table which is identical to MyTable but has one extra column, "matches", containing either 2 or 1. Can't contain 0 because of the WHERE limitation: one of the two matches must be true and count as 1.
The 2's will be returned first, so we can do
if (!isset($matches))
$matches = $tuple['matches'];
else
if ($tuple['matches'] < $matches)
break;
that is, we save the first (and highest) value, and only accept that value for the subsequent tuples. As soon as an inferior match comes by, we exit the loop and close the cursor.
This may be done in MySQL with
SELECT * FROM ( the above query ) AS newTable
WHERE matches = (
SELECT MAX(matches) FROM ( the above query ) AS tmpTable
);
but it incurs a performance penalty.

Answer 4

$search=array('byod','scissor');
$st=""; $st2="";
foreach($search as $value){$st.="type=%$value% or ";$st2.="pattern=%$value% or ";}
$st2=substr($st2,0,-3);
echo "select * from tablename where $st $st2";